Environment

A few years ago, the U.N.'s climate panel warned that the Himalayas' glaciers were quickly disappearing. The claim was dead wrong. The true picture of how the ice in those glaciers is responding to a warming world is far more complex. "There are so many uncertainties that it's really hard to predict the future of the glaciers," says one scientist.

After an outbreak of E. coli in spinach killed several people in 2006, farmers clamped down on every possible source of contamination. Those safety efforts have also pushed out wildlife, destroyed sensitive habitats and increased pollution in waterways.

Four adventurers are coming to the end of a 1,000-mile trek across the state. That might have been the easypart. Their goal: Document the disconnected and disappearing wildlife in Florida's interior and promote a continuous natural corridor the length of the state.

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